Yarn-guiding device



L A R E u A a K E YARN-GUIDING DEVICE Filed Sept. 15, 1945 Patented Aug. 8, 1950 YARN -GU1DING DEVICE Ernest K. Bauer and Major T.

Forker, Mcadville,

Pa assignors to American Viscose Corporation.

Wilmington,

Dei., a corporation of Delaware Application September 15 1945, Serial No. 616,588

19 Claims. (Cl. 24218) This invention relates to the winding of yarn or thread on tubes, cones or other yarn carriers,

and more particularly it relates to a yarn-guiding device for controlling the thread during the winding of one Or more tails priors to the winding of the yarn package proper.

The invention is applicable to the production of one, two or more such tails, each being laterally otfset from the other and from the main winding on one end of the carrier. The device may be used for the production of a single tail winding which is entirely satisfactory when a thread is merely being rewound from one package to another without the insertion of twist. However, in those cases in which the rewinding is accompanied by a twisting operation, as when the thread being rewound proceeds from an uptwister, it is desirable to have one tail in which the full length of'the tail contains the same twist as the thread in the package. In starting up the winding operation in such cases, the yarn does not attain full speed immediately and consequently the first portion wound upon the carrier does not have as much twist as that in the main winding which is made at full speed of-the operation. Since the tail formation is performed at the beginning of the winding operation, it is desirable to form at least two tails, in the first of which all of the low-twisted thread is contained and in each of the succeeding tails or in the last when only two are involved. the entire length of thread has the full twist that is present in that of the main package.

It is an object of the present invention to provide a thread-guiding device to facilitate the production of one or more tails disposed endwise from the main package upon the carrier. A further object is to provide in such a device a thread-guiding surface or element which operates upon the thread independently to the traverse guide and which is shiftable into successive distinct positions, in the last of which it presents the thread to the traverse guide and in each of the preceding positions it guides the thread to a tail-winding position offset from the winding position of the main package. A further object of the. invention is to provide a portable, readily detachable and attachable thread-guiding device which is adapted to be placed in proper position relative to the thread carrier of each of a plurality of winding machines or of each winding position of a winding machine having a plurality of such positions. A further object of the invention is to provide a thread-winding device for producing a tail of predetermined length adjacent 2 the main package or winding. Additional objects or advantages of the invention will be apparent from the drawing and the description thereof hereinafter.

In the drawing. which is illustrative of a ferred embodiment of the invention:

Figure 1 is a side elevation of a thread-guiding device of the present invention with parts of the casing cut away or removed,

Figure 2 is an end view taken .on line 2-2 of Figure 1, showing particularly a preferred meth- 0d of attachment to the frame of a winding machine.

Figure 2a is a plan view showing the method of attachment, taken on line 2a-2a of Figure 1,

Figure 3 is a sectional view taken on line H of Figure l.

Figure 4 is a perspective view and latch,

Figure 5 is a side elevation showing the relationship of the device during winding,

Figure 6 is an end elevationshowing the winding of a preliminary tail,

Figure '7 is an end elevation showing the relapreshowing the stop tion f the device during the winding of the main tail, and

Figure 8 is an end-elevation showing a third position of the device in seized by the traverse guide.

Referring particularly to Figures 1 to 4, a preferred embodiment of the thread-guiding device comprises a base plate 2, a cover plate 3, an end plate 4, and an end closure 5 constituting a housing for the working parts. An operator may hold the device in his hands by means of the grip 8 which is secured within the end closure t; The base plate 2 has a notch or slot i cut in its end projecting beyond the bearing plate 4. This slot is adapted to register with a registering pin 8 suitably secured to a bracket 8 on the frame of a winding machine. A lever l0 pivotally secured to the device at II has an outwardly projecting portion extending beneath the slotted end of base 2 and is provided with a transverse shoulder at i2 adapted to cooperate with an outer edge of the bracket 8 to maintain the device in proper position in relation to the winding machine. A spring I! normally forces the lever clockwise to press the outer projecting end against the bracket 9. The lever ill has an arcuate portion ll to facilitate manipulation thereof by the operator when positioning the device upon a machine or removing it therefrom. The thread-guiding element i i is mounted upon a rotatable rod it, such as by means of an outwardly projecting arm I I which the thread is so that the guide l and arm I! rotate with the rod l6.

The rod l6 carries a latch 16 and extends through a bearing plate IS. A spring 20 having one end embedded in the plate l9 and the other end embedded in the latch l8 tends to rotate the rod with the latch in a clockwise direction as viewed in'Figure 3. This rotation is controlled by means of a, stop 2| arried upon a slidable bar 22 which is pivotally secured to a trigger 23 at 24. The trigger 23 fulcrums at 25 upon a lug 26 extending inwardly from the closure 5 and a spring 21 normally tends to. force the trigger 23 to the left as viewed in Figure l.

Referring particularly to Figures 1, 3 and 4, the latch |8 has three detents 28, 29 and 30 adapted to engage the stop 2| in succession. Each of the detents is angularly spaced about the axis of rotation of the latch as clearly shown in Figure 3 and each of the detents is offset in an axial direction from the next adjacent of the detents as is clearly shown in Figures 1 and 4. Thus, detent 29, which is the intermediate one of the three, is axially offset from detents 28 and 30, between which the latch is necessarily slotted at 3| to allow stop 2| to enter after leaving the detent 29 to engage with detent 30.

The surface of stop 2| which is adapted to engage the detents faces them squarely but the back surface 32 is arcuate (see Figure 4) to per-.- mit the detent 28 to slide past the stop when the rotation of the latch I8 is reversed to cock the device. The finger lever 33 which extends through an opening in the cover 3 and is secured to the rod i6 is manipulated by the operator when it is desired to cook the device.

The slidable bar 22 has a portion 34 extending beyond the stop 2 This portion 34 is connected to a piston 35 within a dashpot 36 filled with oil or other viscous liquid or air and having an opening 31 in one wall through which the projection 34 slides through a suitable packing 38. The piston has a large opening or bore 39 over which is suspended a flap valve 40 pivotally mounted upon an upper portion of the piston at 4|. The flap valve has a very small opening 42 communicating with the large bore 39 of the piston. This dashpot serves to retard the return movement of the bar 22 imparted by the spring 21, but the construction is such that relatively little opposition is presented to the pulling of the trigger 23 because of the large bore 39 and freely pivotal motion of the flap valve 40 away from the piston 35. If desired, the extension 34 and dashpot may be entirely eliminated and as will be explained hereinafter, reliance may be had entirely upon the judgment of the operator as to the length of time he should hold the trigger 23.

The operation of the device will be described in relation to a winding machine which, as shown in Figures 5 to 8, comprises a thread-winding carrier 43 having two tail-receiving portions 44 adjacent one end, which portions may be grooved as shown. The carrier is adapted to be driven by allowing it to move downwardly into contact with a driving drum 45. A traverse guide 46 is arranged to control the disposition of the thread during the winding of the main package. The particular machine as shown comprises the following auxiliary guides: a pig-tail guide 41 and three guide rods 48 extending the length of the machine which may comprise one or more winding positions. bracket 9 with the registry pin 6 positioned adjacent the end of each winding position and 8.8

The frame of the machine has a.

. 4 shown in Figure 5, the thread-guiding device of the present invention is in position forthe start of the tail winding. For this purpose, the operator has cooked the latch l8 by rotating it counterclockwise to the position shown in Figure 3 where the detent 28 is in contact with the stop 2|. The thread proceeds through guide" under the first guide rod 43, around the thread-guiding surface a to guide l5 and then over the last two such rods 48. As shown in Figure 6, the path of the thread is beyond the path of the traverse guide and the traversing action of the guide 46 does not interfere with the thread during the winding of the tail. After the operator has hooked the thread to the carrier or wrapped it about the first groove 44 in conventional fashion, the carrier 43 is allowed to come into contact with the driving drum 45 so that the. winding of the tail in the first groove is started. After the machine has come up to full speed, which may only take a moment or two, the operator pulls trigger 23 which removes stop 2| out of engagement with detent 28, allowing the latch M to rotate until detent 29 engages stop 2|. The position taken by the guide l5 after pulling the trigger 23 is shown in Figure 7, the thread being served to the second groove in the tail groove 34 and still out of the reach of the traverse guide 46. Thereafter, stop 2| is moved back by means of spring 21, which may be allowed to occur whenever the operator releases the trigger 23 subject to the retarding action of the dashpot when the dashpot is a part of the device. If the dashpot is a part of the device, the operator should release, the

trigger 23 immediately after having applied it, so that detent 29 remains in contact with stop 2| a predetermined length of time depending upon the orifice 42 in the dashpot, thereby assuring the winding of a predetermined length of tail having full twist which is the same length for each package. When the device is constructed without the dashpot, reliance is had upon the judgment of the operator as to when to release the trigger 23 upon which the stop 2| is removed from engagement with detent 29 substantially immediately. After the stop 2| is disengaged from detent 23, the guide I5 is rotated until detent 30 of latch l3 comes into contact with stop 2|. The thread thereby comes into the dotted line position shown in Figure 8, in which it is presented for seizure by the traverse guide 46 as soon as that guide next approaches its position adjacent that end of its stroke, whereupon the thread is wound upon the carrier under the influence of the traverse guide entirely independently of the guide II.

The operator may then detach the yarn-guiding device from the machine by pressure upon the finger l4 of lever l0 and he may re-set or cook the guide I! to prepare it for application to the next machine needing attention, by rotating the finger lever 33 in a counterclockwise direction. If the: device is to be used for winding a single tail, such as when the winding operation does not involve imparting of twist, the operator after cooking the device in the fashion Just mentioned, may apply the trigger 23 and hold it back while lacing up the next machine. Upon starting the machine, a single tail will be wound and the like may be controlled either by Judgment of the operator as to the length of time to hold the trigger 23 when no dashpot is used; or the operator may release the trigger 23 immediately upon starting the machine when a dashpot is present, thereby obtaining a predetermined length of tail winding depending upon the dashpot for this purpose.

, ing means about its axis, and means for holding the supporting meansagainst rotation in a plurality of angularly spaced positions.

2. A device forguiding thread comprising rotatable supporting means, an element having a thread-guiding surface carried by the supporting means, means for rotating the supporting means about its axis, and means comprising at least two detents angularly spaced apart about the axis and offset axially from each other for holding the supporting means against rotation in at least two angularly spaced positions.

3. A device for guiding thread comprising rotatable supporting means, an element having a thread-guiding surface carried by the supporting means, means for rotating the supporting means about its axis, and means comprising three detents angularly spaced apart about the axis and offset axially from each other for holding the supporting means against rotation in three angularly spaced positions.

4. A device for guiding thread comprising rotatable supporting means, an element carried by the supporting means having a thread-guiding surface in a position radially spaced from the axis of rotation of the supporting means, spring means for rotating the supporting means about its axis, andmeans for holding the supporting means against rotation in a plurality of angularly spaced positions. g

5. A device for guiding thread comprising a rotatable member, an arm secured to the member and projecting outwardly away from the axis thereof, a thread-guiding element secured to the arm, spring means for rotating the member, and means for holding the member against rotation in a plurality of angularlyspaced positions.

6. A device for guiding thread comprising a rotatable member, an arm secured to the memher and projecting outwardly away from the axis thereof, a thread-guiding element secured to the arm, means for rotatin the member, and means comprising three detents angularly spaced'apart about the axis and offset axially from each other for holding the member against rotation in three angularly spaced positions.

7. A device for guiding thread comprising rotatablesupporting means, an element having a thread-guiding surface carried by the support,

, means for rotating the supporting means about its axis, latch means secured to the supporting means for rotation therewith, apl'urality of detents on the latch means angularly spaced apart about the axis and offset axially from each other,

and a member having a stop movable into a plurality of positions for engaging each of the detents in succession to limit rotation of the supporting means. i

8. A device for guiding thread comprising rotatable supporting means, an element having a thread-guiding surface carried by the support, means for rotating the supporting means about its axis, latch means secured to the supporting means for rotating therewith, a plurality of detents on the latch means angularly spaced apart about the axis and offset axially from each other,

and a member having a stop movable into a plurality of positions for engaging each of the detents in succession to limit rotation 01 the supporting means, and means for controlling the time of engagement of the stop with at least one of the detents.

9. A device for guiding thread comprising rotatable supporting means, an element having a thread-guiding surface carried by the support, means for rotating the supporting means about its axis, latch means secured to the supporting means for rotation therewith, three detents on the latch means angularly spaced apart about the axis and oli'set axially from each other, and a 'member having a stop movable into a plurality of positions for engaging each of the detents in succession to limit rotation of the supporting means, and means for controlling the time of engagement of the stop with the intermediate detent with which it engages.

10. A device forguldin thread comprising rotatable supporting means, an element having a thread-guiding surface carried by the support, means for rotating the supporting means about its axis, a latch havin a plurality of detents secured to the supporting means for rotation therewith, said detents being angularly spaced apart about the axis and offset axially from each other, and a member having a stop movable into a-plurality of positions for engaging each of the detents in succession to limit rotation of the supportin means.

11. A device for guiding thread comprising a rotatable member, an arm secured to the member and projecting outwardly away from the axis thereof, a thread-guiding element secured to the arm, means for rotating the member, a latch secured to the rotatable member and havin a plurality of detents angularly spaced apart in an annular region about its axis of rotation, cache! the detents being offset in an axial direction from the next adjacent detent, and a stop slidable into a plurality of positions for engaging each of the detents in succession to limit rotation of the rotatable member.

12. A device for guiding thread comprising a rotatable member, an arm secured to the member and projecting outwardly away from the axis 5 thereof, a thread-guiding element secured to the arm, means for rotating the member, a latch secured to the rotatable member and having three detents angularly spaced apart and havin the intermediate detent offset in an axial direction from the other detents, and a stop reciprocable between two positions offset in an axial direction relative to the latch for engaging each of the detents in succession to limit rotation of the rotatable member.

13. In combination; a winding machine having a frame, bracket means on the frame, and registering means on the bracket; a readily attachable and detachable thread-guiding device comprising rotatable supporting means, an element having a thread-guiding surface carried by the supporting means, means for rotating the supporting means about its axis, means for holding the supporting means against rotation in a plurality of angularly spaced positions, and complementary registry means for engaging that on the bracket of the machine.

14: In combination; a winding machine having a frame and at least one winding unit; each unit comprising means for receiving and rotating a carrier for the winding, and individual registering means on the frame adjacent one end of the carrier; a portable, readily attachable and detachable thread-guiding device comprising rotatable supporting means, an element having a thread-guiding surface carried by the supporting means, means for rotating the supporting means about its axis, means for holding the supporting means against rotation in a plurality of angularly spaced positions. and complementary registry means for engaging the first-mentioned individual registering means on the frame of the machine.

15. In combination; a winding machine having a frame and at least one winding unit; each unit comprising means for receiving and rotating a carrier for the winding, and individual registering means on the frame adjacent one end of the carrier; a portable, readily attachable and detachable thread-guiding device comprising rotatable supporting means, an element having a thread-guiding surface carried by the supporting means, means for rotating the supporting means about its axis, means comprising three spaced detents for holding the supporting means against rotation in three angularly spaced positions, and complementary registry means for engaging the first-mentioned individual registering means on the frame of the machine.

16. In combination; a winding machine having a frame and at least one winding unit; each unit comprising means for receiving and rotatin a carrier for the winding, and individual registering means on the frame adjacent one end of the carrier; a portable readily attachable and detachable thread-guiding device comprising rotatable supporting means, an element havin a thread-guiding device carried by the supporting means, means for rotating the supporting means about its axis, means for holding the supporting means against rotation in a plurality of angularly spaced positions, thereby disposing the thread-guiding surface in a plurality of positions in the last of which it presents the thread for seizure by the traverse guide and in each position prior to the last it guides the thread to a portion of the carriers offset from that for receivin the main winding, and complementary registry means for engaging the first-mentioned individual registering means on the frame of the machine.

17. In combination; a winding machine havin a frame and at least one winding unit; each unit comprising means for receiving and rotating a carrier for the winding, and individual registering means on the frame adjacent one end of the carrier; a portable, readily attachable and detachable thread-guiding device comprising rotatable supporting means, an element having a thread-guiding surface carried by the supporting means, means for rotating the supporting means about its axis, and means comprising three spaced detents for holding the supporting means against rotation in three angularly spaced positions, and complementary registry means for engaging the first-mentioned individual registering means on the frame of the machine.

18. In combination; a winding machine having a frame and at least one winding unit; each unit comprising means for receiving and rotating a carrier for the winding, and individual registering means on the frame adjacent one end of the carrier; a portable, readily attachable and detachable thread-guiding device comprising a rotatable member, an arm secured to the memher and projecting outwardly away from the axis thereof, a thread-guiding element secured to the arm, means for rotating the member, means for holding the member against rotation in a plurality of angularly spaced positions, complementary registry means for engaging the first-mentioned individual registering means on the frame of the machine. 7

19. In combination; a winding machine having a frame and at least one winding unit; each unit comprising means for receiving and rotating a carrier for the winding, and individual registering means on the frame adjacent one end of each of the carriers; a portable. readily attachable and detachable thread-guidin device comprising a rotatable member, an arm secured to the member and projecting outwardly away from the axis thereof, a thread-guiding element secured to the arm, means for rotating the member, means for holding the member against rotation in a plurality of angularly spaced positions, complementary registry means for engaging the first-mentioned individual registering means on the frame of the machine.

ERNEST K. BAUER. MAJOR T. FORKER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED srA'rEs PA'IEN'I'S 

